1、This adapter can transmit calls, MP3 music, and mobile phone voice to the car speakers. Compatible for IOS, for Samsung, for Google, for LG, for HTC and Bluetooth devices. 2、Hands free function, built in microphone, automatically switch from music playing state to hands free mode when answering a call. One click answer, rejection and recall. 3、Car battery voltage function, display the voltage for 3 seconds when plugged into the car socket. Always keep the battery healthy. Then it goes to auto play mode. 4、This wireless car Bluetooth transmitter is also a music player, supporting Bluetooth children disk, memory card, MP3, wma player. With anti interference performance and CVC technology. 5、You can use this wireless car Bluetooth FM transmitter to listen to music while charging. It can automatically connect to memory pairing after booting, which is very convenient to use. 1 x Adapter1 x Audio Line Item Type: Car FM TransmitterModel: C8Color: Rose GoldMaterial: ABSFunction: Bluetooth Adaptation, FM TransmissionScope of Application: Car 1: Bluetooth Handsfree Call; 2: Echos Cancellation and Noise Processing During A Call; 3: Stereo Bluetooth and Fm Transmission Technology; 4: Support USB, Memory Card (not Included)/Bluetooth Function; 5: Support MP3 Format Music; 6: Automatic Power off Memory Function; 7: Cigarette Lighter Power Supply: DC12V－24V Voltage Power Supply; 8: Bluetooth Version 5.0 FM Transmitting Frequency: 87.5~108MHz 9: Voltage Detection